Introduction

Vellar SDK (vellar-sdk) is the fastest way to add a passkey-powered, self-custodial Stellar wallet to your app — without handling private keys, seed phrases, or the low-level submission plumbing.

One install, one object:

const vellar = createVellarWallet({ network, appName, kit, sac, backend, isValidAddress });
await vellar.create({ username });        // passkey → smart account
await vellar.pay({ to, amount, token });  // simulate → passkey → sponsored submit

What you get

• 🔐 Passkeys, not seed phrases — WebAuthn (Face ID / Touch ID / security keys). Keys live in the device's secure enclave and never leave it.
• 🪪 Smart-contract accounts — each wallet is a Soroban smart wallet, so it can carry programmable policies (spending limits, multisig, allowlists).
• ⛽ Fee-sponsored — users hold no XLM for fees; submission is sponsored server-side.
• 🚫 No key custody, no silent signing — the SDK never holds secrets and never signs without an explicit passkey prompt.

Who this is for

Developers building on Stellar who want login + a wallet without becoming wallet-infrastructure experts — and teams who want programmable, on-chain security (spending limits, co-signers) instead of client-side checks that can be bypassed.

Status

Early and evolving. Testnet-ready; mainnet use is pending a security review. APIs may change before 1.0.

New here? Go to Installation, then the Quickstart to get a working wallet in a few minutes.